Oil-burning engine



0v. 1 N 927 B. c. SMITH OIL BURNING ENGINE 2 Sheets-Sheet 1 Filed Dec. 4, 1924 INVENTOR A fi Wm ATTORNEY 3 1927' 11KB, c. SMITH OIL'BURNING ENGINE Filed Dec. 4, 1924 2 Sheets-Sheet 2 Patented Nov. 1, 1927.

{UNITED 2P ELNT' TFICFE BENJAMIN C. iSM'IT-I'LwOF BAYONNE, NEW JERSEY, ASSIGNOR TO STANDARD MOTOR CONSTRUTCYJEIDINv COMPANY, OF 'JERSEY C I!I'Y, NEW JERSEY,- A CORPORATION OF NEW JERSEY.

' om-B R ING ENGINE.

Application filed December 4, 1924. Serial No. 753,850.

' This invention relates to fuel burning engines of the so called Diesel type, and particularly to suchengines as employ a number .of cylinders.

The main obj ect'of the invention is to provide simpleand eifective means whereby any "one of thec'ylinders may be caused to idle, whereby the operator in charge may make certain repairs without stopping theentire motor. For example, the fuel injection valve sometimes requires cleaning, and to dot-his requires its removal. This isone of the things that maybe easily and safely accomp'lished by the use of 'myinvention.

' In the drawings *Fig; 1 isa vertical-cross sectional view showing such-parts as arenecessary to: an.

understanding of my invention;

Fig. 2 is a relatively enlarged side elevation of'certain parts Fig. 3 is a cross sectional view, certain parts being shown in detail and in elevation;

Fig. 4 is a side view of a detail;

Fig. 5 is a sectional view ofthe head of one cylinder, taken in a plane at right angles to the plane of the section in Fig. 1;

Fig. 6 is a plan view of the head of one of the engine cylinders and certain associated parts.

I have not attempted herein to ShOW a complete engine or the several cylinders thereof, since each of the cylinder units will correspond substantially and therefore a description of one will sutfice for all.

1 is an engine base. 2 is the crank shaft. 3 is a cylinder. 4 is the working piston. 5 is a connecting rod. 6 is a fuel feed valve through which fuel is forced. This valve is mounted in the cylinder head and may be of any suitable construction. 7 is what I will term an overhead rocker, pivoted at 7 for operating the valve 6. 7 is a fork on rocker 7 which fork engages a part of the fuel feed valve to lift and open it. 8 is a draw-rod connected to the rocker 7. 9 is a slotted pivot stud at the lower end of the drawrod 8. 10 is what I will term a lower rocker pivoted on a suitable supporting -meinber that I will term a short shaft 11, there being one such support for each cylinder unit. 10 is a nose on the lower rocker, engaging in the slot of the pivot stud 9. 12 is a cam shaft for all of the cylinders the same bein driven from the crank shaft in the usua manner.- 13 is a cam for the rocker 10, which proper time.

ope'ratesthe fuel feedvalve 6. Each short shaft '11 has a control lever'l f whereby its angular position may be manually varied. 15 is an air inlet valve for the cylinder 3. 16 isan upper rocker therefor. "16 is a pivot for the rocker '16. 16 is a-noseon the rockerwhich nose engages the inlet valve stem. 17 is a push rod for the upper rocker 1'6. 18'1is what I will term a lower rocker for engagi-ng the lower end of the push rod 17 to lift the same and open valve 15. 19' is an eccentric portion on the supportingshaft 11,--upon which eccentric portion the rocker 10 for the fuel feed valve is mounted. 20 is a cam on thecam shaft 12-for operating "the air inlet-valve rocker '18. 21 is adog' secured to; the shaft 11 and co-oper'ating. with the rocker arm'18 in the manner and forithe --*punpose' hereinafter described. '22 is an exihaustuvalve. This exhaust valve may be 2-0piera'ted from the cam shaft 12 by asimilar means and in the same manner as the inlet valve 15 the cams being so timed as to operate said valves in the proper order and at the 23 represents a push rod for the exhaust valve, and 24 represents what I will term the lower rocker therefor. 25

represents the cam for operating the lifter 24 and thereby the exhaust valve 22.

The cam for controlling the operation of the fuel feedvalve 6 is also positioned; properly, so that fuel will be injected into the cylinder at the proper time and for the proper period.

It may be assumed that, when the engine is operating normally, the shaft 11 will occupy the position shown in Fig. 3. If, for any reason, it should be desirable to remove the fuel feed valve 6, it is manifest that this could not be done with ease or safety unless the suction and compression within. the cylinder 3 is relieved and'unless the means for operating the fuel feed valve is rendered ineffective for the time. To that end the operator has but to grasp the lever 14 and swing it back, whichwill first cause the eccentric portion 19 to lift the outer end of the rocker 10 until it is out of the range of operation of the cam 18. The-dog 21 is so positioned on the short shaft 11 that a further turning of shaft 11 will cause said dog to engage one of the other rockers, for example the rocker 18, to lift it .to a suilicient extent to open its complementa y valve and hold the open (until the shaft 11- is swag: thus is desired to vent the cylinder.

In the drawings the lever 14 represents the control lever for the so called short shaft of the next adjacent cylinder unit.

I have shown my invention in preferred form only being aware that many changes in the design and construction of the various parts may be made without departingfroin the scope thereof.

I claim:

1. Ina four-cycle engine of the character described, a cylinder, an air intake valve, an exhaust valve, a fuel feed valve, a cam shaft, separate rockers actuated thereby for operating said valves, a shaft support for said rockers, means carried by said shaft support for actuating the rocker for the fuel valve, and other means carried by said shaft for actuating the rocker for one of the other valves, said means being so positioned on said shaft relatively to each other that a rotation of the shaft to one position will first render the fuel valve rocker ineffective, and a further rotation to another position will operate the rocker for another one of the valves to open the same While still continuing to render the fuel valve rocker ineffective.

2. In a four-cycle engine of the character described, a cylinder, an air intake valve, an exhaust valve, a fuel feed valve, a cam shaft, separate rockers actuated thereby for operating said valves, a shaft support for said rockers, an eccentric carried by said shaft support for actuating the rocker for the fuel valve, and a dog carried by said shaft for actuating the rocker for one of the other valves, said eccentric and dog being so positioned on said shaft relatively to each other that a rotation of the shaft to one position will first render the fuel valve rocker ineffective, and a further rotation to another position will operate the rocker for another;

one of the valves to open the same While still continuing to render the fuel valve rocker ineffective.

BENJAMIN 0. SMITH. 

